PQMon: a powerful veto for burst events
PQMon: a powerful veto for burst events
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PQMon：对突发事件的强大否决权
DOI：
10.1088/0264-9381/20/17/331
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发表时间：
2003
影响因子：
3.5
通讯作者：
H. Ward
中科院分区：
文献类型：
--
作者：
K. Kötter;I. Heng;M. Hewitson;K. Strain;G. Woan;H. Ward
引力波探测器 GEO 600（Danzmann Ketal 1994 GEO 600 - 600m 激光干涉引力波天线提案（Garching：MPQ））在科学运行“S1”期间获取的数据包含大量瞬态。为了降低突发引力波搜索算法的误报率，需要否决所有那些显然不是引力波起源的瞬变。本文提出了一种通过查看解调干涉仪输出信号的“同相”(P) 和“正交”(Q) 通道来抑制瞬变的方法。利用P通道和Q通道对引力波突发事件具有不同敏感性的事实，该方法可以否决功率分布与引力波感应信号特征不同的瞬变。
Data taken by the gravitational wave detector GEO 600 (Danzmann Ketal 1994 GEO 600—Proposal for a 600m Laser-Interferometric Gravitational Wave Antenna (Garching: MPQ)) during the science run ‘S1’ contain a large number of transients. In order to reduce the false-alarm rate of burst gravitational wave search algorithms it is desirable to veto all those transients that are clearly not of gravitational wave origin. This paper presents a method of vetoing transients by looking at the ‘in-phase’ (P) and ‘quadrature’ (Q) channels of the demodulated interferometer output signal. By taking advantage of the fact that theP-channel and theQ-channel have different sensitivities to gravitational wave burst events, this method can veto transients that have a power distribution different from the signature of a signal induced by a gravitational wave.